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Finding the Fourth Proportional to 45,763.84, 68,646.40 and 12,931.84

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Solution

The fourth proportional to 45,763.84, 68,646.40 and 12,931.84 is: 19,397.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,763.84 : 68,646.40 = 12,931.84 : x
  2. Step 2: Convert to fraction form
    45,763.84/68,646.40 = 12,931.84/x
  3. Step 3: Cross multiply
    45,763.84x = 68,646.40 × 12,931.84
  4. Step 4: Simplify right side
    45,763.84x = 887,724,261.38
  5. Step 5: Solve for x
    x = 887,724,261.38/45,763.84
  6. Step 6: Final answer
    x = 19,397.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.